David Tennant, the 10th regeneration of Doctor Who's title character, was one of Stephen Colbert's guests on Wednesday's Late Show, and Colbert asked about his new, slightly controversial successor, Doctor No. 13. "How do you feel, or do you have any feelings about Jodie Whittaker breaking the glass TARDIS ceiling and becoming the first female Doctor?" he asked, and Tennant did. "I'm delighted," he said, noting that Whittaker has starred with him on the BBC detective show Broadchurch for three seasons. "She's a mate of mine," as well as the right actor at the right time.

Colbert noted that not every Doctor Who fan has been so pleased. "Are you surprised that there's been any backlash at all?" he asked. "Do you know, whenever the Doctor changes there's a backlash, because that's a character that people love so people get very affectionate about the Doctor they knew," Tennant said. When he took over the role of the iconic time lord from Christopher Eccleston, "they were like, 'Who's the weaselly looking guy? Who's this? I liked the last guy! This is not going to work for me! This show is dead to me! I resign from the internet! [send].'" And it won't last, he added. "Sure, Jodie is from a different gender than anyone who has gone before, but that will be irrelevant almost immediately once she takes the part."

Why stop a successful show like Broadchurch after three seasons? Colbert asked, shifting gears. "It's a peculiarly British thing. I think we see something that works, and we run from it — you heard about Brexit?" Tennant asked. "That's what we do. If it works, and it's solid, and it makes money, and it's good for everyone in it, abandon it immediately." Since Tennant is now voicing Scrooge McDuck, a billionaire who employs lots of family members, on the new Duck Tales, Colbert ended the interview by having him read quotes that were either the Scrooge or Donald Trump.

Earlier this week, Whittaker told BBC News how she found out she landed the part of the Doctor, and how hard it was to keep that a secret for weeks. You can watch below. Peter Weber